> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# URM08-RS485 Ultrasonic Ranging Sensor (35~550cm)

**Type:** Product page · **SKU:** SEN0246 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/urm08-rs485-ultrasonic-ranging-sensor-35-550cm.html ([markdown](https://core-electronics.com.au/urm08-rs485-ultrasonic-ranging-sensor-35-550cm.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

####  Introduction 

 With an internal temperature compensation and accurate distance detection, URM08-RS485 is a combination of temperature measurement device and distance inspection tool. The inner is fully enclosed and the external is made of metal crust, which has brought advantages such as waterproof, dustproof and corrosion resistance… It is applicable to detections of liquid level, levels, and barrier applications. As a high standard sensor, it guarantees smaller blind zone and larger inspection range. On the premise of stable output data, it shows better measurement capabilities in the market of temperature sensors and distance detection sensors. ####  Specification 

- Operating Voltage: DC 6.0 ~ 12.0V
- Operating Current: 250mA
- Effective Range: 35 ~ 550 cm
- Distance Resolution: 1cm
- Temperature Resolution: 0.1°C
- Temperature Error: ± 1 ℃
- Measurement Period: 70ms
- Operating Temperature Range: -10 ~ 70 ℃
- Distance Error: ±1%
- Operating Humidity Range: RH<75%
- Acoustic Frequency: 38 ~ 42KHz
- Direction Angle: 60 °
- Protection Degree: IP65
- Communication Interface: RS485
 
####  Documents 

6. [Product wiki](https://wiki.dfrobot.com/URM08-RS485_Waterproof_Sonar_Range_Finder_SKU_SEN0246)
7. [Specific](https://github.com/Strictus/DFRobot/raw/master/SEN0246/%5BSEN0246%5D-20190820-EN-V1_0.pdf)
####  Shipping List 

- URM08-RS485 U ltrasonic Ranging Sensor x1
- Screw Nuts x2
- Metal Pads x2
- Adaptor Wire x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen0246.jpg)